package com.xiaohua.xiaohuamall.product.service.impl;

import com.mysql.cj.util.StringUtils;
import com.xiaohua.xiaohuamall.product.entity.AttrEntity;
import com.xiaohua.xiaohuamall.product.service.AttrService;
import com.xiaohua.xiaohuamall.product.vo.AttrGroupWithAttrsVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xiaohua.common.utils.PageUtils;
import com.xiaohua.common.utils.Query;

import com.xiaohua.xiaohuamall.product.dao.AttrGroupDao;
import com.xiaohua.xiaohuamall.product.entity.AttrGroupEntity;
import com.xiaohua.xiaohuamall.product.service.AttrGroupService;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {
    @Autowired
    AttrService attrService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>().like("attr_group_name",params.get("key"))
        );
        page.setTotal(page.getRecords().size());
        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {
        if (catelogId == 0){
          IPage<AttrGroupEntity> page=this.page(
                  new Query<AttrGroupEntity>().getPage(params),
                  new QueryWrapper<AttrGroupEntity>());
          return new PageUtils(page);
        }else {
          String key = (String) params.get("key");
          QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>().eq("catelog_id",catelogId);
          if (!StringUtils.isNullOrEmpty(key)){
              wrapper.and((obj)->{
                 obj.eq("attr_group_id",key).or().like("attr_group_name",key);
              });
          }
          IPage<AttrGroupEntity> page = this.page(
                  new Query<AttrGroupEntity>().getPage(params),
                  wrapper
          );
            return new PageUtils(page);
        }

    }

    /**
     * 根据分类id查出所有的分组以及这些组的属性
     * @param catelogId
     * @return
     */
    @Override
    public List<AttrGroupWithAttrsVo> selectBycateloiIdwithattr(Long catelogId) {
        //1、查询分组信息
       List<AttrGroupEntity> attrGroupEntities = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id",catelogId));
       //2、查询所有属性
        List<AttrGroupWithAttrsVo> attrGroupWithAttrsVos = attrGroupEntities.stream().map(group ->{
           AttrGroupWithAttrsVo attrGroupWithAttrsVo = new AttrGroupWithAttrsVo();
           BeanUtils.copyProperties(group,attrGroupWithAttrsVo);
           List<AttrEntity> attrs = attrService.getRelationAttr(attrGroupWithAttrsVo.getAttrGroupId());
           attrGroupWithAttrsVo.setAttrs(attrs);
            return attrGroupWithAttrsVo;
        }).collect(Collectors.toList());
        return attrGroupWithAttrsVos;
    }

}